PMID- 21470373 OWN - NLM STAT- MEDLINE DCOM- 20120126 LR - 20110902 IS - 1751-553X (Electronic) IS - 1751-5521 (Linking) VI - 33 IP - 5 DP - 2011 Oct TI - Correlation of assessment of plasma cells by flow cytometry and detection of cytogenomic abnormalities by fluorescence in situ hybridization in plasma cell neoplasms. PG - 545-50 LID - 10.1111/j.1751-553X.2011.01323.x [doi] AB - INTRODUCTION: Increased monoclonal plasma cell count (PCC) in bone marrow (BM) is an indicator of a plasma cell neoplasm (PCN). Assessing PCC in BM by morphologic evaluation (ME) and flow cytometry (FC) is important in diagnosing PCN. Also important is fluorescence in situ hybridization (FISH) to detect cytogenomic abnormalities (CAs) in PCN. Owing to FC's short turnaround time, FC-assessed PCC is often used as empirical reference for further FISH study. However, correlation of FC-assessed PCs with FISH-detected CAs has not been well studied. The purpose of this study was to validate this correlation on BM aspirates from patients with PCN. METHODS: We reviewed 224 cases of newly diagnosed PCN identified from our Lab-database. Both FC and FISH had been performed on BM aspirates from these cases, of which 178 had been assessed by ME. The original findings from the 224 cases were also reviewed. RESULTS: Using a cut-off of 3% PCs assessed by FC as an indicator for further FISH analysis, 20 (17%) FISH-detectable PCN cases were missed; 30% of the missed cases carried high-risk CAs and/or were highly progressive PCN. CONCLUSION: In PCN cases, an FC-assessed 3% PCC in BM aspirates should not be used as a cut-off for further FISH testing. CI - (c) 2011 Blackwell Publishing Ltd. FAU - Lu, G AU - Lu G AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. gglu@mdanderson.org FAU - Zhang, X X AU - Zhang XX FAU - You, M J AU - You MJ FAU - Chen, W AU - Chen W LA - eng PT - Journal Article DEP - 20110407 PL - England TA - Int J Lab Hematol JT - International journal of laboratory hematology JID - 101300213 SB - IM MH - Aged MH - Bone Marrow/metabolism/pathology MH - *Chromosome Aberrations MH - Female MH - *Flow Cytometry MH - Humans MH - Immunophenotyping MH - *In Situ Hybridization, Fluorescence MH - Lymphocyte Count MH - Male MH - Middle Aged MH - Multiple Myeloma/*diagnosis/genetics/metabolism EDAT- 2011/04/08 06:00 MHDA- 2012/01/27 06:00 CRDT- 2011/04/08 06:00 PHST- 2011/04/08 06:00 [entrez] PHST- 2011/04/08 06:00 [pubmed] PHST- 2012/01/27 06:00 [medline] AID - 10.1111/j.1751-553X.2011.01323.x [doi] PST - ppublish SO - Int J Lab Hematol. 2011 Oct;33(5):545-50. doi: 10.1111/j.1751-553X.2011.01323.x. Epub 2011 Apr 7.